A heavy wooden box sits completely still on a flat level floor. Which statement correctly describes the…

A heavy wooden box sits completely still on a flat level floor. Which statement correctly describes the forces acting on it?
  1. No forces are acting on the box at all.
  2. Only the downward force of gravity is acting on it.
  3. Balanced forces are acting on it, resulting in zero net movement.
  4. Frictional force is actively pushing it upward.

Solution

An object at rest on a floor has downward gravitational force balanced by the upward normal reaction force from the floor.

Asked in: Homi Bhabha Practice

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